Index: /issm/trunk-jpl/externalpackages/m1qn3/install.sh
===================================================================
--- /issm/trunk-jpl/externalpackages/m1qn3/install.sh	(revision 27369)
+++ /issm/trunk-jpl/externalpackages/m1qn3/install.sh	(revision 27370)
@@ -26,12 +26,15 @@
 patch src/src/m1qn3.f patch/m1qn3.f.patch
 
-if which ifort >/dev/null; then
-	FC="ifort"
-else
-	FC="gfortran"
-	if [ `uname` == "Darwin" ]; then
-		FC="gfortran -arch x86_64"
+if [ -z "${FC-}" ]; then
+	if which ifort >/dev/null; then
+		FC="ifort"
+	else
+		FC="gfortran"
+		if [ `uname` == "Darwin" ]; then
+			FC="gfortran -arch x86_64"
+		fi
 	fi
 fi
+echo "Using fortran compiler: $FC"
 
 # Compile and install